Criminal Escape!

I suppose this is a (possibly unfinished) drawing of a prison guard tower, but I'm open to other theories. If so, it might have been inspired by my reading of "The Super-Stalag of Space", a Legion of Super-Heroes story from Adventure Comics #344 & 345 (May/June 1966), that I read when it was reprinted in Superboy and the Legion of Super-Heroes #202 (June 1974).

Wanted, Dead or Alive

Possibly the Batman villain, but I can't guarantee that. While I'm in the realm of conjecture here, I believe that it's possible that all the random marks may be intended to represent bullet holes.

Crime Map

I'm hoping that the criminals didn't actually leave this map to their hideout at the crime scene. I suspect it wouldn't be too difficult for the cops to identify the crossbone-headed thief from this artist's rendering.

Beware of the Black Hand!

Everyone likes receiving greeting cards...unless they're from ... The Black Hand!

The jail-cell bars on the inside of the card are made of some sort of thick cardboard packing form, affixed with cloth first aid tape. I believe this was all inspired by some kid's book I read, and isn't actually Mafia-inspired (La Cosa Nostra generally don't use prison time as part of their arsenal of threats). Also, I think that the "Alex" referred to may be a character in said book, as I don't recall having a friend by that name at that point.